FPM Gunworks Whistling Bunghole Features The FPM Gunworks Whistling Bunghole is built specifically for bolt action shooters who value the quick detach convenience of a modern suppressor mount without adding unnecessary weight or length to the muzzle. Machined from 17-4 stainless steel the component is built to stand up to repeated mounting and dismounting cycles without loosening or wearing out of spec. At just 1.30 ounces and 0.890 inches long it adds minimal bulk to the end of a bolt action barrel keeping the rifle s balance close to its unmounted state. Threaded 5/8x24 it is compatible with a common thread standard found across many .30 caliber and 7.62mm rifles. Designed to fit Q Plan B style mounts as well as Rearden Atlas and Rearden Atlas XL mounts the Whistling Bunghole gives shooters flexibility to use existing suppressor mounting hardware already in their collection. The black DLC finish adds a hard low friction surface coating that improves wear resistance during repeated suppressor attachment and removal. Its compact size makes it well suited to precision bolt action rifles where every ounce and every inch at the muzzle can affect balance and handling. For bolt action shooters seeking a lightweight durable quick detach mount component the FPM Gunworks Whistling Bunghole is available for sale at GrabAGun. FPM Gunworks Whistling Bunghole Specifications Manufacturer: FPM Gunworks Model: Whistling Bunghole Caliber: 30 / 7.62mm Material: 17-4 Stainless Steel Finish: Black DLC Length: 0.90 Thread Pattern: 5/8x24 Weight: 1.30 oz Available At: GrabAGun